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Tripolymer of a vinyl aromatic compound, a coumarone-indene fraction and material recovered from a hydrocarbon-catalyst sludge

US 2,582,425 A · Inventors: GEISER EDWARD M

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

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  • Granted January 15, 1952. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by January 15, 1969.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMay 18, 1949
GrantedJanuary 15, 1952
Term endedJanuary 15, 1969
Application number—
Classification (CPC)C08F240/00
Length5 pages

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1950195219541956195819601962196419661968Application filedMay 18, 1949Patent grantedJan 15, 1952Term endedJan 15, 1969

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Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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